hello, how could I move airbyte docker internal postgres server to RDS, I don't want to lose any data?

tweaking DATABASE_URL might do the trick, https://github.com/airbytehq/airbyte/blob/master/docs/operator-guides/configuring-airbyte-db.md

I think you Carrie db dump from the internal db and export that to your new rds. Next step is to change the db url as per the step above.

Let me know if these suggestions help, Rytis!